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`define CMD_INC_DEC         #AUTOGEN_NEXT_CMD

`define CMDEX_INC_DEC_implicit              4'd0

`define CMDEX_INC_DEC_increment_implicit    4'd0

`define CMDEX_INC_DEC_decrement_implicit    4'd1

`define CMDEX_INC_DEC_modregrm              4'd2

`define CMDEX_INC_DEC_increment_modregrm    4'd2

`define CMDEX_INC_DEC_decrement_modregrm    4'd3

dec_ready_one && decoder[7:4] == 4'h4

`CMD_INC_DEC

SET(dec_cmdex, `CMDEX_INC_DEC_increment_implicit | { 3'd0, decoder[3] });

SET(consume_one);

dec_ready_modregrm_one && { decoder[7:1], 1'b0 } == 8'hFE && { decoder[13:12], 1'b0 } == 3'b000

prefix_group_1_lock && `DEC_MODREGRM_IS_MOD_11

`CMD_INC_DEC

SET(dec_cmdex, `CMDEX_INC_DEC_increment_modregrm | { 3'd0, decoder[11] });

IF(decoder[0] == 1'b0); SET(dec_is_8bit); ENDIF();

SET(consume_modregrm_one);

IF(rd_cmd == `CMD_INC_DEC && { rd_cmdex[3:1], 1'b0 } == `CMDEX_INC_DEC_modregrm);

    SET(rd_req_eflags);

    SET(rd_src_is_1);

    // dst: reg, src: reg

    IF(rd_modregrm_mod == 2'b11);

        IF(rd_mutex_busy_modregrm_rm); SET(rd_waiting);

        ELSE();

            // reg, reg

            SET(rd_dst_is_rm);

            SET(rd_req_rm);

        ENDIF();

    ENDIF();

    // dst: memory, src: reg

    IF(rd_modregrm_mod != 2'b11);

        SET(rd_dst_is_memory);

        SET(rd_req_memory);

        IF(rd_mutex_busy_memory); SET(rd_waiting);

        ELSE();

            SET(read_rmw_virtual);

            IF(~(read_for_rd_ready)); SET(rd_waiting); ENDIF();

        ENDIF();

    ENDIF();

ENDIF();

IF(rd_cmd == `CMD_INC_DEC && { rd_cmdex[3:1], 1'b0 } == `CMDEX_INC_DEC_implicit);

    SET(rd_src_is_1);

    SET(rd_dst_is_implicit_reg);

    SET(rd_req_eflags);

    SET(rd_req_implicit_reg);

    // dst: implicit reg, src: imm

    IF(rd_mutex_busy_implicit_reg); SET(rd_waiting); ENDIF();

ENDIF();

IF(exe_cmd == `CMD_INC_DEC);

    SET(exe_arith_index, (exe_cmdex[0] == `FALSE)? (`ARITH_VALID | `ARITH_ADD) : (`ARITH_VALID | `ARITH_SUB));

    SET(exe_result, (exe_cmdex[0] == `FALSE)? exe_arith_add[31:0] : exe_arith_sub[31:0]);

ENDIF();

IF(wr_cmd == `CMD_INC_DEC);

    IF(wr_dst_is_memory && ~(write_for_wr_ready)); SET(wr_waiting); ENDIF();

    SET(write_rmw_virtual,   wr_dst_is_memory);

    SET(write_regrm,         wr_dst_is_implicit_reg || wr_dst_is_rm);

    // no carry flag

    SAVE(zflag, zflag_result);

    SAVE(sflag, sflag_result);

    SAVE(pflag, pflag_result);

    SAVE(aflag, aflag_arith);

    SAVE(oflag, oflag_arith);

ENDIF();